Kowa Genesis 8.5x44mm Roof Prism Waterproof Binoculars. 5x44mm Roof Prism Waterproof Binoculars delivers top performance during any outdoor activity. The resilient body that features O-ring sealing techniques prevents moisture from entering the body of the binocular while O-ring sealing techniques ensure that no light leaks can escape to the outside world. The 8.5x44mm Kowa Genesis Waterproof Binoculars feature an all-metal chassis and advanced O-ring sealing techniques to prevent any light loss. They also feature a wide field of view and an accurate compass in the right hand - all of which allow users to sight targets with exact precision. Kowa Genesis 8.5x44mm Roof Prism Waterproof Binoculars are nitrogen-filled and O-ring sealed and conforms to the strict ISO standards for water resistance and fog-proofing. Specifications for Kowa Genesis 8.5x44mm Roof Prism Waterproof Binoculars: Manufacturer: Kowa Color: Green Magnification: 8.5 x Objective Lens Diameter: 44 mm Prism System: Roof Prism Material: BAK4 Eye Relief: 18.3 mm Exit Pupil: 5.2 mm Field of View Angle: 7 degrees Binoculars Focus System: Center Focus Twilight Factor: 27 Close Focus: 5.5 ft Diopter Adjustment Range: -4 - 4 dpt Length: 6.5 in Weight: 33.44 oz Condition: New Magnification Type: Fixed Width: 5.4 in Focus Range: 5.58 ft to infinity Country of Origin: Japan Height: 2.5 in Package Contents: Kowa Genesis 8.5x44mm Roof Prism Waterproof Binoculars Kowa Genesis 8.5x44mm Roof Prism Waterproof Binoculars